Combined punching and forming press



June 5, 1923. 1,457,816

w. H. BETTS COMBINED PUNCI-IING AND FORMING-PRESS Filed Aug. 23, 1920 6 Sheets-Sheet 2 hum/70F Mum/v #517713 5) w a" ,1;

June 5, 1923.

1,457,816 w. H. BETTS COMBINED PUNGHING AND FORMING PRESS Filed Aug. 23, 1920 6 Sheets-Sheet 5 June 5, 1923.

1,457,816 w. H. BETTS COMBINED PUNCHING AND FORMING PRESS Filed Aug. 23, 1920 6 Sheets-Sheet 4 June 5, 1923. I 1,457,816

W. H. BETTS COMBINED PUNCHING AND FORMING PRESS Filed Aug. 23, 1920 6 Sheets-Sheet 5 Ill W y F Patented June 5, 1923.

1 WILLIAM-H. nn'r'rs, ors'r. LOUIS, Missoum, ASSIGNQB: {r nnr'rs sqnn r-n'orno'ren COMPANY, or s1. LOUIS, MISSOURI, A conronn'rron or nrssounr.

COMBINED PUNGHING A rem/Hm FREES- Application filed nu ustzs, 1929. "s m in. 405,277,

ow ll whomit may 0.5mm.-

I Be it known that 1, WI IAM Bn'rrs, a citizen of the United St t andxmsidenbof St. Louis and State of Missouri; have in 6 vented certain new and useful Improve] men in om i d Punching and Fo ming Presses; offwh ch the fOllOWlIlg 1s a specification cont'ainlnga full, clear, and exact description, reference being had to lacg 16 companying drawings, forming a part thereof. I I I My ii ventlon relates to improvements 11 combined punching and forming presses and oomple e ar icle bel ing-turned out w th ev ry stroke .of'the plunger, except the first stroke,

in the r wings; p F g-- 1 is a fr nt ele tion of my de ice-f Fig. rear elevation. I f I Fi. .3. 'a verticalse t'ona viewt k n on he line 3-3 o Fig- '1,-

Fig. 4: a n vation of th c lumn an 30 haSe'wi-ththe balance of the mechanism remo ed.

Fig. 5 a ver lcs secti n on he 11:

of Fig. 4. Fig. .6 a-top' plan'view of the punching 35 lief Fig. 7 a vertical longitudinal cross .sectirinnf .t same. I j I I f F S a bottom I plan View of the secfl io U I 4o r l ig.9 aface viewoffo e of the'torming dogs ig. l0a's'ie e vation o the ,same- ..F ;gli a reduc d Vie o he riving 45 i Fig. 12a ,cr'osssectional View of one of the forming dogs and its supporting block howing th ma ne of s cur ng th f rming dog therein the general construction' of the -.s1.1pportingflb loc;k. A

the fo m ng mandrel fs bwi g th 2 1 1 ofwithdra'wing thesarne.

' Eig.j14:- is a perspect v V w Of P t n I of, ,the mandrel showing a sole protector is to construct a com-I 1 ig.;i3,;is a tragmen a sectiona View 2 completely formed located thereon and in the act of. being, removed therefrom. Fig. 15 is an enlarged-fragmental View of the feeding and roughing roller.

is an. enlarged ectional View, of one of the feed roller supports showing th manner of securing the feed rollers .and regulating the teriaL- Figs. 17,-"18.'19, and 21 are'vi ew's show- I I ing the position of the punching'and form-. mg parts during the variousstages of opits various stages of formation.

In the constrnctionofmy deyiclel employ and in the bearings 33 is placedthecrank shaf-ti35 the caps 34 holding it in position, The crankshaft consists of the two journals 36, which are supported in the' bear'ings33,

and towhichfly wheels .37 are secured. On the inner ends of the journals 36 are formed discs 38, which discs in turnare connected the shaft39 isthe bearing 40, whi'h-termh pressure thereof gonfthema- I v eration, and Figs.- 22, 23 and'Q i arepe r spective views ofthe sole protector during together by the shaft 39, this shaft being De p set from the center of the'dises. Secured to nates a cylindricalprojection il and i-n this projection is secured theconnectingro'd' 42. This connecting rod is provided with screw threads which are screwed intothe 057- 5 lindrical projection LL-and the connecting rod" i-slocked in position against accidental removal therefrom by'me'ans of --a lock-nut 43. Thepurpos'e of this constructionis to allow a certain amount of'adjnstment which I I.

is necessary in order to bring the working parts of the forming mechanism in proper relation to each other. The lower end of the placed in position is secured to the connect.- ing r-odby means of a. pin 45 -which extends connecting rod 42 is provided 'with screw I threads. andoV'er these screw threads iisseg cured ,a socket 4:4. This socketa fter-i-ibeing through the socket and connecting rod. IThe lower end of the socket 524 is provided with a 'ball 45; this ball fitting in a. socket 46' formed in the press-heed 4'1 Q The ball 151s secured wi-thinthe socket 461w means go f the plate 48, this holds the ball against re structed as to be tightened with a spanner wrench and is for the purpose of securing the. punch 52 to the punch-carrying head. The frame 31 is provided with a vertical slot 53 in which the press head 47 and punchcarrying head 49 are located, and in which they reciprocate vertically. The press head and punch head are secured in this slot by means of a plate 54, which is bolted tothe frame, this plate forming a closed channel in which the head works. The frame is also provided with cutaway portions or recesses 55, 56 57 and 58, the purpose of which will be explained in detail later. The recesses 55 and 56 extend backwardinto the frame 31 to a point which will bring them on a level with the press head 47, thus leaving the inverted L-shaped projections '59. Se cured on top of the L-shaped projections 59 is the die block 60 which is secured thereto by means of screws passing through the openings 61. This die block is provided with a central opening 62 and in the upper face is formed a rectangular recess 68 in which the die 64 is secured, the opening in the die registering with the opening 62. This die block is T-shaped, which prevents it fromshifting sideways after being placed in position, and in the lower part of the block is formed a pair of rectangular recesses 65 in which are secured plates 66. The purpose of these plates is to receive the punched wear plate or sole protector, as illustrated in Fig. 18. It will be noted from Fig. 7 that the edges 67 extend over the opening 62a trifle so as to catch the edges 68 of the sole protector 69. These edges also have an additional function, which will be explainedin detail later. Immediately above the die block 60 and secured to the face of the recess is the strip-per plate 7 0. This stripper plate is provided with an opening 71, which registers with the opening formed in the die 64 and with the passageway 7 2, which allows the material to pass through.

. The, purpose of this stripper plate is to prefit within a counter-bore 78 formed on the inner face of the .block 73. This construction prevents the pin 76 from becoming dislodged as the head 77 contacts with the face of the recess 56 when the block has been se-' cured in position. This is accomplished by means of the bolt 7 which passes through the opening 78* formed in the block 73 and is received by the screw threaded opening 79. Secured to the lower end of the press head 47 is a bifurcated member 80. This bifurcated member 80 is spaced from the head 47 by means of the spacer block 81, the spacer block and bifurcated member are, however, secured to the head 47. by means of screws 82.

The upper ends of the bifurcated member or fork 80 are curved," as indicated by the This is for the purpose of bringing the dogs back into the position,

numeral 83.

as shown in Fig. 17 afterthe dogs have swung apart as in Fig. 18, The dogs 75 are provided with a perforated ear 84 through c which the pin 76 passes. The face of the dogs 75, opposite the ear 84, is provided with a recess 85 and a projecting tip or tongue 86; the purpose of this is to give the object punched its final and finishing touches. The face 87 of the dogs is cut away, as indicated by the numeral 88, leaving a flat face 89,

which is somewhat deeper than the face 87 this is to allow the stripper 90 to pass behind the dogs so that the finished article can be removed from the mandrel 91. These dogs are also provided with the extensions 92 which enter into the slot93 formed in the bifurcated member 80." It is also through this slot that the stripper 90 passes when the fork 80 is raised to its uppermost position. Secured t0 the press head 47 is a block 94.v This block is positioned at a short distance below the projecting end 95 of the mandrel 91 and is for the purpose of preventing the sole protector from falling downward before it has been brought in contact with the dogs 75. The block 94 is of such size that it will readily pass in the space 96 left between the two dogs 75 when they are in closed position; Formed through the head 47 is an opening 98 throughwhich the mandrel 91 passes. As is clearly shown in Fig. 14 the end 95 of the mandrel has its underside flat, while the upper surface is curved. This gives the prongs of the sole protector their curvature, and when the mandrel 91 moves downward with the head 47 the completed protector comes in contact with the stripper 90 and is forced from the mandrel and discharged out of the machine. The mandrel 91 is provided at its rear end with projections 99,

which have their lower portions inclined as f at 100, This is for the purpose of riding up on the inclined blocks 101, which aresecured to the back 102 of the frame 31. Formedintegral with the mandrel 91 is a screw threadedrod "103, which rod'l passesthrough a bracket104:" Secured to the presshead 47 arid between "the bracket-144 :ind mandrel 91;

. the'machine'framea Between the projections 1'5 is interposed-atoll s ring 105].- {On the screw thread'ekiwend'*iar' the rod1'03 is PIaced' a stop 106, which is held in position by 'meahsQof the'nut 107 'This' stop is designed to "cont'aet withthe'trip lever'1G8," which is hingedly 4 attached to the bracket 104at'jthepoint iiid1-* cated by the'numferal 109; 'Formed'i'nteg'ral with the trip lever- 108' is le'pjair of projections 110, which are designed t Contact wxfith the tapered block 1 11 which -'-is secured-t0 110 is secured a; perforated plate-'112 thro1igh' which the screw threaded rod 113 passes; This rod is secured tothe bracket 104 an'd' has on its outer end-the nut 114 and'between the mit 114* and plate 112 is "placedaeoil spring-115,

v the purpose of which is to tilt the trip le ver downward andhold'the so t'liat the niandrel 91 will 'be-retained 'in its withdrawn position until the projections on-the bracket have eontactecl with thetapered block 111 thepurpo'se of'whic'h is to grip and ieedthh when the mandrel is released and assumes its operating-position. "Secured on the crank shaft 35 is egear -116,' Which gearmeshes with-a seeondgear i117. The'gear 1l7- hein'g secured to 'one of the arms 32 01? the frame.- Attached to the gear 117 is atennecting rod 118, whichhas Iits oppositeend con'nected to a ratchet pawl 11%). "This pawl contwctizig with the teeth on the :ratchetwheel 120.. This ratchet wheel is mounted on the feed 'sh'a ft122, which shaft is mm nted the hearii1, g's 128; -=Approximateiy the eenter of this shaft is a knurled enlargement .124;

material, 1 as we'll as roughing the surface with which it contaots. Adjacentheaohside of the kirirrledgpohtion E124areiormed-collarsi; 1 25,. which aredesig ed gto I contact "with;

blocks*'-l26 mounted in the supporting braeketsflflq'; wiill keepi the feed'qeller from shifting sideways. Mounted "in the brackets {1'27 is a second pair of 1 blocks Whichearry a smooth pressure roller 1 29,

the pressure imparted to the pressure miller being governed *by' the .set' sere'ws "Connecting the brackets 127 with eaehotheris a 'lbflil' 1 31, and 'ithroug'h this @bar is secured the :stem :ofi-a llubricator i132; 'Theoh ject o'zf this lubricaitor "being: to. :allow .0i1,':0r other lubri ant; :to drop slowly 1 on :the "pressurethrough the baick 102 is aii 'opeiiin gil35 which is -i eli g'nment with the guidesjlfieteiidiztheg slot??? of the' strippen'plate and to the rear of this epe'ziing and aegissexing there what 'iec'allecl a throatl3fix ThisaCtiiig-as @guide for" the material after it has .pessed through the} feed-rollers; Thepress head 47is iprov'ided with'an elongatedopehing m'i @This:

allows the material to pass throii hithehead: duririgfthe reciprocationofvthe" ead. jflhe back 102 is also providedgwith an elongated slot 138 through: which -themaii'dreli 91 :and bracket' l tlt pass, the blocks .101 beinglocated on either eide'-of this'slot. qlnitheirecess-fii,"

formed iiithe framefiijis located a har 139. I

The? purpose of this {bar is to' pres ent lowerendi'of the press head from tilting mit Wardly; itcOhtactiIig-Wi thttheiforkSO; a'lid' 1 m this bar 139 :the stripper is secured;

hood 140 ifs'a'ls o securedto this her and serve s theipurpose-of receiving: the. :fifiishedflrticle because of; a; certain am'ount of force reqiiired to drive a, the. finished articleafrloin the 2 mm drel; which tenses the article to loe l forcibly expelled;.andwverethis; ,xhoodinot nse/d the articieswould be @rojectedqniteiia distance aenoss th -=.:floorii Thisihood also makesjt possible to plane areceptaele-iin from of-the pressvfor'meceiving thefinished articlesf 5 after it has been: mmoveaby? stripper, and 'direti ig it do nward and wwtward from the machine,- 'ihis hoodziis necessary aIrnoperaitingxmydeviee theimaterialvused V comes-iii long strips or in Tolls'and-the teedi imeqhanism iris so, arranged'sasito I interm ttently: *feed. the htward mildertheiqamhch soxflmat some mailman takeeare ozf er number 30f fpresses' Ihis see that. material applied: when .ex'

hauetedE-and that the contaiinersreeeliwi rig the;

articles iarefrremovedwwhe n yfilled."

and

Thejreeess :557IF-is tor the piirposeozfiallowing the fork 8.01'rto' travel 511p and Zdmmtwith the pness head.- Throu gh ithedowefipaa'tioi the onetime:isrermearthemp m -ML- is; if-(3.131311% purpose v at allowing: theend 69.5 2.02 the hmaindnei ifil' :etowpass ttherethmoligh and aibow ezthevpletesgfie soithat themir dersurfllace' oifi theqroijectimh 95 rbie :abmjz'e" the upper face the sole (fill.

rtlhe xoperaition ofsmy d Mice Atcemheemmehmmhas?beemsssembledgthe placed} .i'mioperi rltion; I ,IAfter-sthe machinethas heenestmtedde; strip ofi metazlisiffied hetweeri inttermittentlyf by lameans-.o ,f;{the ratehet amid pawl i medliaaiism; .imd #the: mateniali fed awake; just farz enough so Bias tsupyliy sufficient Emetal zto? stamp wont-'1: tthe mitile; When ihezmdtal :reaches the pinrhzand Edie the deseendihg-tofwtliezpunch-willstamp' out a portion ofv the metal; as; that shown in. Fig. 22., This stamped-out portion-willfall downward: through theopening 61 and leave; theyprojecting ends 68 rest on the plates-66.v This downward movement alsocauses the wthdraw'al or f'rearward movement of; the, mandrel 91.; -Ontheupward; stroke; after the punch 52. hasgcleared themetal, being fed into the machine, the pawland ratchetmechanism is brought into operationnand the material fed forward readyqfor the; next punching operation. As the press head 47- reaches itshighest point, the projections 110 come in. contact with. the block 111,,thus tilting the trip lever 108 upward -01: to a horizontal position,,as shown-in Fig. :3. This will releasethemandrel 91 and will allow; it to-niove forward, as shown in Fig. 3, with the end 95'abov'e the punched article-- {The machine now commences on the; downward stroke, the mandrel 91v iscarried downward by the pressahead 17,-:the edges 67 Ofthe plates 66 being closer together than the .entirezlength of the punching .69, the ends v(i8 ofithe punching are bent at right angles to thefmain'body of the punching-.69, as shown in- Fig. 23; the continued downward move? ment of :the mandrelywill thenbring the punching into contact: fwith the forming. "dogs* and the recess 85, and-the project ing tip 86'of these'dogs is so arranged: that the lower'portion of themandrelcanventer freely, and-as soonasthemandrel contacts with the loweredge of the'recess' ;the-'fork 80 has traveled sufiiciently far to releasethe ends-92, the mandrel continuing to descend will force these dogs apart so-that they will assume the position shown in Figs. =18 and 21. Duringthis forcing apart of the .dogs 75,:lthe projecting ends 68 willbe pressed tightly betweenthe tips'86 of the dogs 75 and the curved portion" of the mandrel 91. This will squeeze the metal sothat the a ends of the projection68 arebroughtto a driving on cutting :point, as shown in Fig. 24. Thestripper 90 extends behind the dogs in the cut away portion 88 thereof," and as the mandrel continues -to descend the fork portion of the stripperengages with :the inner end of the formed'article, and due tothe incline of this fork as "well -'as:. the withdrawal of themandrel, immediately after the :formation of the article has "been completed, the article is removed from the man.-

dre'l and discharged outwardly to the-hood,

or shield 140 and then downward. into. a' receiving container. When the mandrel 91 has been withdrawn the block 106 carried by the rod ispushedbackwardso as to release the trip lever 108'. The .spring 1'15 now comes into action and tilts the projec tions- 110 inward, as -shown in Fig. 13.. This will hold the: mandrel 91- in withdrawn position until the return upward stroke when the mandrel has' passed a :point above: the

work ..-and ready finished object. lying ontheplates 66.. Then i the projectionsllO contact: with :the v"block- 111 and throw the; trip'lever upward, allow-r ing themandrel to .bewprojectedover the stroke. I v

By this operation it will be seen thata, complete article ,is formed by every stroke of the press head, with the exception of the, first stroke, which only punches, and does not.

.fork93 and thus;,holdthe dogs secure in the position as shown in Fig, 17 until the fork 80 has passed the lowest point of the arms or I for the next downward arms of the projections 92,:when the dogs will be enabled to swingopen, as shown in Figs. 1 8 and21, :Referrmg to F igs. 17,18,19, 20 and 21:,

Fig. 1 7 shows the commencement of the operation; that is, the material is fed under,

the punch and the punch is ready to descend. Fig, 18, the punch has descended through the material and :the punched article is'lying on the plates- 66. This shows the dog in open position. I

Fig. 19. shows the est position and theend95 of the mandrel 91 above thepunched article. I .Fig. 20 shows the punch and mandrel partially descended and shoWs theends of'the,

punched'article atri ht angles to themain ody portion thereof. r

1 Fig. 21 shows the finishedmine it tan-l tion on the end- 95 of-the mandrelin theact; of leavingits final ;contact-with the dogs 75.

.qAn important feature ofmy device is the.

speed with-which theffinished articles can beturned-out, and this'is limited onlyby-the'. ability ofthe punchanddogs to withstand,

the strain due to their heating and isalso limited by the heating of the ,materialused Pi h at its as this will also impart heat to the working 7 ports. Having I'claim is: 1. -A combined; punch-ing and forming press comprising a base, a frame secured fully described my inventionwhat.

thereto, a press .headreciprocally T mounted in theframe, punch head secured tothe press; head, a punch carriedby thepunch head, a die secured to the-frame-and beneath thepunch, a pain-of formingv dogs; secured to theframe and located beneath the -die, and a" mandrel .for carrying the article punched past .the forming'dogs, said dogsadaptedto sharpen and give the article'its final shape:

2..Atombined-punchland forming press comprlsing a base, a framesecured thereto,

a press head',reciprocally-- mounted in the frame, .a crankshaft mounted injthe frame II and above the press head, a connecting 'rod for connecting the press head and crank shaft, a punch head secured to the press head, a punch carried thereby, a die block securedto the frame and beneath the punch, a die'secured in the die block, a pair of formin dogs pivotally secured to the frame below t he die-block, a mandrel projecting through the press head, means carried by the frame for drawing the mandrel backward and into the press head, means for forcing the mandrel forward, said mandrel adapted to carry the article punched past the formthe frame and beneath the punch, a die located in the upper portion thereof and in direct alignment with the punch, a pair of supporting plates secured to the lower side of the die block and. in alignment with the die, said supportingplates adapted to receive the article punched, a mandrel capable of lateral movement carried by the press head, means carried by the mandrel for projecting it forward over the article resting on the supporting plates, a pair of forming dog's secured to the frame and below the supporting plates, said forming dogs adapted to contact with the punched article while it is being carried downward by the mandrel I whereby the article is shaped and sharpened,

means carried by the frame for moving the mandrel in a retrograde movement, means carried by the frame for removing the finished article from the mandrel, and a feeding means for'intermittently feeding material beneath the punch.

4. A combined punching and forming 7 press comprising a base, a frame secured thereto, a press" head reciprocally mounted in the frame, a punch head secured. to the press head, a punch carried by the punch head, a die block secured to the frame beneath the punch, a die mounted in the die block, a pair of forming dogs located'be-' neath the die, means for carrying the article punched past theforming dogs, which dogs are adapted to form and sharpen the-article,

and means carried by the frame for -intermittently feeding material beneath the punch. I b I I 1 5. In a combinedpunch and forming press comprising in combination with a punch and die, a die head and the frame in which the die head ismounted, of a mandrel extending through said die head and movable hori zontally therein, and a pair of forming dogs pivotally secured to theframe beneath the die past which the mandrel is adapted to carry the punched article said dogs adapted ,to sharpen said punched article and give it its final shape. v

6. In a combined punch and formingpress V comprising a frame, a die secured thereto, a

punch head recipro'cally mounted in the I frame, a punch carriedthereby, a mandrel mounted. in the punch head and slidable horizontally therethrough, means carried by the frame and punch headfor imparting the I I sliding motion tothe mandrel, a pair of dogs pivotally secured to the frame and below the 'die, said dogs adapted to simultaneously give the punched article having driving points formed integral therewith its final shape andsharpen the' driving points thereof when brought in contact therewith by the mandrel, and means carried by the frame for removing the finished article from the mandrel. Y

7 A combined punch and forming press comprising aframe, a die carried thereby, a

punch head mounted in said frame, a mandrel extending horizontally through said punch head below the die, said mandrel capable of being moved'horizontally through the punch head, a pair of pivotally mounted dogs carried by the frame,,between which giving the punched article having driving said mandrel is adapted to pass, said dogs 1 goints'its finished shape and sharpening its riving points while saidarticle is being I carried. past the dogs by the mandrel, means carried y the frame and punch head for imparlting a horizontal movement to themandre I I In testimony whereof, I have signed my I name to this specification.

WILLIAM n snrrs, 

